Ice and Rain Protection

Question 1

Can you use APU bleed air for anti-ice ?

Answer 1

No

Question 2

When do icing conditions exist?

Answer 2

OAT or TAT in flight is 10C or less

• visible mositure is present, (less than 1sm)
• Standing water, ice, or snow is present on the ramps, taxiway or runway

Question 3

What happens if wing A/I is on at touchdown?

Answer 3

Valves automatically close

Question 4

When should wing A/I be selected on?

Answer 4

When TAT is below 10C and icing conditions are detected.

Question 5

One switch for wipers but are each wiper independently powered?

Answer 5

Yes

Question 6

When does the heat for PITOT and TAT turn on?

Answer 6

With one engine running.
-The pitot probes and AOA vanes are heated
-the TAT is NOT heated.
TAT is heated when off ground

Question 7

Does the -300 have any icing detection light?

Answer 7

NO

Question 8

How many ice detectors on 767ER?

Answer 8

2

Question 9

767ER Anti ice valves have OFF, AUTO, and ON. What does Auto do?

Answer 9

On the ground, it does nothing, commanded closed. Must be turned to ON to operate. In the air , if ice is detected by the system, auto turns it on

Question 10

What annunciation shows that anti-ice is working correctly on 767ER?

Answer 10

No annunciation. If icing is displayed, anti-ice is not working correctly

Question 11

Ground positions for Anti-ice selector on 767ER…

Answer 11

Wing = OFF
L and R Eng = AUTO

Icing conditions ground
L and R Eng = ON

In flight
All = AUTO